/// <summary>
/// Updates a transition event after the transition is complete.
/// </summary>
protected virtual void UpdateTransitionEvent(
ISystemContext context,
uint transitionId,
uint causeId,
TransitionEventState e)
{
TranslationInfo info = new TranslationInfo(
"StateTransition",
"en-US",
"The {0} state machine moved to the {1} state.",
this.GetDisplayPath(3, '.'),
CurrentState.Value);
e.Initialize(
context,
this,
EventSeverity.Medium,
new LocalizedText(info));
e.SetChildValue(context, BrowseNames.FromState, LastState, false);
e.SetChildValue(context, BrowseNames.ToState, CurrentState, false);
e.SetChildValue(context, BrowseNames.Transition, LastTransition, false);
}
/// <summary>
/// Causes the specified transition to occur.
/// </summary>
public ServiceResult DoTransition(
ISystemContext context,
uint transitionId,
uint causeId,
IList <object> inputArguments,
IList <object> outputArguments)
{
// check for valid transition.
uint newState = GetNewStateForTransition(context, transitionId);
if (newState == 0)
{
return(StatusCodes.BadNotSupported);
}
// check the cause permissions.
if (causeId != 0)
{
if (!IsCausePermitted(context, causeId, true))
{
return(StatusCodes.BadUserAccessDenied);
}
}
// do any pre-transition processing.
ServiceResult result = InvokeCallback(
OnBeforeTransition,
context,
this,
transitionId,
causeId,
inputArguments,
outputArguments);
if (ServiceResult.IsBad(result))
{
return(result);
}
// save the last state.
if (m_lastState == null)
{
m_lastState = new FiniteStateVariableState(this);
}
m_lastState.SetChildValue(context, null, CurrentState, false);
// update state and transition variables.
UpdateStateVariable(context, newState, CurrentState);
UpdateTransitionVariable(context, transitionId, LastTransition);
// do any post-transition processing.
InvokeCallback(
OnAfterTransition,
context,
this,
transitionId,
causeId,
inputArguments,
outputArguments);
// report the event.
if (this.AreEventsMonitored && !m_suppressTransitionEvents)
{
TransitionEventState e = CreateTransitionEvent(context, transitionId, causeId);
if (e != null)
{
UpdateTransitionEvent(context, transitionId, causeId, e);
ReportEvent(context, e);
}
}
return(ServiceResult.Good);
}
/// <summary>
/// Updates a transition event after the transition is complete.
/// </summary>
protected virtual void UpdateTransitionEvent(
ISystemContext context,
uint transitionId,
uint causeId,
TransitionEventState e)
{
TranslationInfo info = new TranslationInfo(
"StateTransition",
"en-US",
"The {0} state machine moved to the {1} state.",
this.GetDisplayPath(3, '.'),
CurrentState.Value);
e.Initialize(
context,
this,
EventSeverity.Medium,
new LocalizedText(info));
e.SetChildValue(context, BrowseNames.FromState, LastState, false);
e.SetChildValue(context, BrowseNames.ToState, CurrentState, false);
e.SetChildValue(context, BrowseNames.Transition, LastTransition, false);
}
